Kremlin Wades Into Ukrainian Turmoil

KIEV, Ukraine—Ukraine's president tried to placate demonstrators on Tuesday by accepting his prime minister's resignation and repealing new antidissent laws, but the heat remained on him as Moscow signaled it could review a massive bailout deal.

Moscow approved a $15 billion bailout last year when President Viktor Yanukovych agreed to drop a planned deal with the European Union that Russia bitterly opposed. But the Kremlin has...